| Preoperative diagnosis |
| Histologic diagnosis | ||||
|
| Total | Metastasis | Tuberculosis | Sarcoidosis | Lymphoma | Reactive |
| Lung cancer | 8 | 5 | 0 | 0 | 0 | 3 |
| Isolated Lymphadenopathy | 27 | 5 | 9 | 6 | 3 | 4 |
| Undertermined lung mass | 17 | 9 | 2 | 1 | 1 | 4 |
| Total | 52 | 19 | 11 | 7 | 4 | 11 |